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Hard disk space not getting listed for ESXi

Posted on 2011-09-22
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Last Modified: 2012-05-12
Dear Experts:

Installed VMware ESXi5.0 on dell server, hard disks are configured with RAID5. ESXi is installed on pendrive and hard disk space availble is 1.2TB, from the vsphere client created data storage of 250GB and created VM and also installed guest OS now required to create few more datastore and use it for the VMs but hard disk is not getting listed when done the below steps:

Logged in to vspheres client did the following:
 Storage/Add Storage/Select Type/Disk/Lun when click on Next Disk space is not getting listed.

Please help how to make the remaining space of the server hard disk to be availble for the ESXi so that can create LUN's and use it for creating the VM's

Request you to also suggest me is this the recommended practice or please suggest me the best practice. Thanks in advance.
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Question by:D_wathi
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LVL 124
ID: 36580940
when you created the first datastore, did you create it on the 1.2Tb space?
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Author Comment

by:D_wathi
ID: 36581000
Sir, Thanks for the reply. I did not use the entire space used only 250GB out of 1.2TB. I was thinking can create multiple data stores with the availble total 1.2TB and create each VM under every data store. Please help.
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LVL 124
ID: 36581076
What size is your array?

Normally when creating datastores, a datastore partition is created on the entire array.
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Author Comment

by:D_wathi
ID: 36581125
Thanks sir. the entire array size is of 1.2TB this is listed while creating the first datastore but i selected custom and used only 250GB thinking can create the few more datastores later. Please suggest me shall i delete this and create the datastore on entire array.
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LVL 124
ID: 36581170
No you cannot, create multiple datastores on the same array.

Either carve up the Array into multiple LUNs (virtual disks or logical disks).

or Allocate Maximum Space to your datastore, which means, you will have to delete and start again.
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LVL 124
ID: 36581179
Before deleting, you should be able to Increase the Space on that existing datastore.

Just select Properties of the datastore, and select Increase, and select the space unsusded space!
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LVL 124
ID: 36581189
see screenshot after hitting Properties on the datastore

 increase
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Author Comment

by:D_wathi
ID: 36581432
Sir, i read in book " It is best to create smaller virtual LUNs stripped across large physical LUNs" for this reason only i tried with 250GB datastore.

Sir, I have deleted the created datastore now total 1.2TB is free, please help me on the below points
1. creating the datastore for the entire array
2. how to create smaller virtual LUNs stripped across large physical LUNs
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LVL 124
ID: 36581640
You create smaller Virtual LUNs, in the BIOS of the RAID Controller at startup, and not in ESXi.
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Author Comment

by:D_wathi
ID: 36582483
Sir, Thank you very much. shall i reboot the server login to BIOS and create the Virtual Luns and then continue with the ESXi, please suggest
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LVL 124

Accepted Solution

by:
Andrew Hancock (VMware vExpert / EE MVE^2) earned 2000 total points
ID: 36582524
Yes. If you want to create multi (many) datastores for ESXi.

It's the RAID BIOS you need to Select.
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